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SIRPAULGERMAN 08-16-2018 07:02 PM

Surge tank is problematic
 
Well I just replaced the original surge tank because it was leaking when the car get hot, it was leaking trough the cap, so i replaced the cap and it did not help.
Anyway I got another surge tank from Rock auto (ULTRA-POWER 603121 ) and I am having the same problem, is leaking trough the cap. this cap is different you cant tied all they way in.

Any particular idea how to fix this problem ?

fdryer 08-16-2018 08:59 PM

Re: Surge tank is problematic
 
1 Attachment(s)
Other than the possibility of finding poorly made aftermarket surge tanks and pressure caps, unless you can determine what the operating pressures are in your cooling system (overheating leading to higher pressures), guessing can be expensive. If you can, try borrowing a cooling system pressure tester from Autozone or Advance Auto (if they have one to borrow). Adapters for radiators, surge tanks and pressure caps complete these kits to test cooling systems and caps separately. A hand held sir pump pressurizes the cooling system or cap to factory specified pressures for the vehicle to find weaknesses in hoses, clamps, fittings, radiator, thermostat gaskets and heater cores. Pressure caps are tested for rated pressures.

System operating pressures for '01 SL1/SL2/SW are 15 psi.

fetchitfido 08-16-2018 09:09 PM

Re: Surge tank is problematic
 
Take a spare radiator cap, shove a tire valve stem in it and use any tire pressure gauge to check pressure. DIY pressure tester for under $5; though I don't have a clue what a 'proper' pressure tester costs so maybe that $5 isn't much of a savings.

Similar idea for the older style cooling system: [url]https://www.instructables.com/id/Make-an-Auto-Radiator-Pressure-Tester/[/url]

SIRPAULGERMAN 08-16-2018 09:09 PM

Re: Surge tank is problematic
 
[QUOTE=fdryer;2280030]Other than the possibility of finding poorly made aftermarket surge tanks and pressure caps, unless you can determine what the operating pressures are in your cooling system (overheating leading to higher pressures), guessing can be expensive. If you can, try borrowing a cooling system pressure tester from Autozone or Advance Auto (if they have one to borrow). Adapters for radiators, surge tanks and pressure caps complete these kits to test cooling systems and caps separately. A hand held sir pump pressurizes the cooling system or cap to factory specified pressures for the vehicle to find weaknesses in hoses, clamps, fittings, radiator, thermostat gaskets and heater cores. Pressure caps are tested for rated pressures.

System operating pressures for '01 SL1/SL2/SW are 15 psi.[/QUOTE]

I was able to fix it by tying the cap when the car was hot, it stop the leaking however I dont feel confident that it is going to last

fdryer 08-17-2018 07:35 PM

Re: Surge tank is problematic
 
[QUOTE=fetchitfido;2280031]Take a spare radiator cap, shove a tire valve stem in it and use any tire pressure gauge to check pressure. DIY pressure tester for under $5; though I don't have a clue what a 'proper' pressure tester costs so maybe that $5 isn't much of a savings.

Similar idea for the older style cooling system: [url]https://www.instructables.com/id/Make-an-Auto-Radiator-Pressure-Tester/[/url][/QUOTE]
I reviewed that link. It describes older radiator caps. The idea may or may not be applicable to surge tanks with plastic pressure/vacuum caps. Did you adapt a surge tank cap with a tire valve? I don't know if our pressure caps lends itself to inserting a tire valve among the pressure and vacuum valve unless they're removed...........

SIRPAULGERMAN 09-21-2018 03:43 PM

Re: Surge tank is problematic
 
I am still loosing coolant from somewhere in the system, I went back to a OEM radiator cap, but when the car gets hot, I am loosing water, I am going back to the original surge tank, any idea what is going on ?

fdryer 09-21-2018 04:16 PM

Re: Surge tank is problematic
 
Either you're losing coolant from the coolant container, cap or elsewhere. Initial posts are about the coolant container and cap and now coolant leaking elsewhere.........

At what temperature does the temperature gauge needle move to when coolant leaks? If you have a reader, what's the digital temperature when coolant leaks out?

An old cap can be modified to insert a tire valve as suggested by fetchitfido but you'll have to make this mod along with an air pump with pressure gauge to pump the cooling system no more than 20 psi (otherwise damage can occur to gaskets, hoses, O-rings. Cold pressurization is safer in testing cooling systems. A bicycle pump with gauge works here.

toggenburg 09-21-2018 04:21 PM

Re: Surge tank is problematic
 
Are you losing coolant, or USING coolant?
Meaning, do you see any fluid leaks anywhere on the ground, water pump, splashed onto the serpentine belt or the coolant tank or pressure cap threads?
If not, then it may be that the engine is using coolant...ie, head gasket leak.
Any white, sweet smelling clouds out the tailpipe, especially at a cold startup?

SIRPAULGERMAN 09-21-2018 07:38 PM

Re: Surge tank is problematic
 
I am using water until i solve the problem

cgg17 09-21-2018 07:55 PM

Re: Surge tank is problematic
 
I am also having the same problem, a clear defined leak and hiss from the cap. I see the dried coolant too, but the loss is barely noticeable. Its every third week I have to add about a cup of 50/50 mix.

toggenburg 09-21-2018 09:20 PM

Re: Surge tank is problematic
 
But, you only said "I am using water until i solve the problem".
That does not begin to answer the questions I laid out....:(

SIRPAULGERMAN 09-22-2018 01:37 PM

Re: Surge tank is problematic
 
[QUOTE=toggenburg;2282504]But, you only said "I am using water until i solve the problem".
That does not begin to answer the questions I laid out....:([/QUOTE]

I dont think the car is consuming coolant, I think is the reservoir, the plastic is too thin compared to the original, and when it get hot is causing a leak

fdryer 09-22-2018 02:18 PM

Re: Surge tank is problematic
 
Thin or thick, how does that explain coolant leaving out the top of the cap? If the container didn't burst from extreme pressures, its not the tank.

Unless you can show temperatures are well above normal and pressures above normal, you're guessing why coolant is released thru the cap. The coolant cap is just not a cap. It contains pressure and vacuum relief valves. Pressure rating is 15 psi. Vacuum - 1 psi. Presuming a new tank and cap are used, your cooling system may be overheating for one or several reasons.

Reasons for overheating that can create higher operating pressures than normal; worn water pump, blocked coolant passages - engine block, radiator, hoses, heater core, faulty thermostat, faulty coolant sensor.

At the least, where is the temperature needle on the temperature gauge when coolant leaves the container? Do you have a reader to display temps? Is the coolant sensor damaged?

SIRPAULGERMAN 09-22-2018 02:46 PM

Re: Surge tank is problematic
 
[QUOTE=fdryer;2282522]Thin or thick, how does that explain coolant leaving out the top of the cap? If the container didn't burst from extreme pressures, its not the tank.

Unless you can show temperatures are well above normal and pressures above normal, you're guessing why coolant is released thru the cap. The coolant cap is just not a cap. It contains pressure and vacuum relief valves. Pressure rating is 15 psi. Vacuum - 1 psi. Presuming a new tank and cap are used, your cooling system may be overheating for one or several reasons.

Reasons for overheating that can create higher operating pressures than normal; worn water pump, blocked coolant passages - engine block, radiator, hoses, heater core, faulty thermostat, faulty coolant sensor.

At the least, where is the temperature needle on the temperature gauge when coolant leaves the container? Do you have a reader to display temps? Is the coolant sensor damaged?[/QUOTE]

the temperature gauge indicates around 1/4, I bit more, if funny I takes me 30 miles to get to work, when I arrive to the parking lot is when the car starts to leak water

When the car get hot, the plastic reservoir starts to deform, the one I have is not the original and it is more fragile than the original.
I went back to the original reservoir, can you guys recommend a good cap ? the one I got is this one [url]https://www.ebay.com/itm/ACDelco-RC87-GM-Original-Equipment-18-P-S-I-Radiator-Surge-Tank-Cap/192629570139?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649[/url] is the type that you can tied all the way

toggenburg 09-22-2018 03:00 PM

Re: Surge tank is problematic
 
That cap will work, and if you have an original Saturn reservoir, it should seal as you tighten the cap......if is somehow is leaking past the threads, at worst, you could wrap PTFE (polytetrafluorethylene, ie teflon tape) around those threads and crank the cap down. IF that is where it is leaking from.

SIRPAULGERMAN 09-22-2018 03:51 PM

Re: Surge tank is problematic
 
[QUOTE=toggenburg;2282524]That cap will work, and if you have an original Saturn reservoir, it should seal as you tighten the cap......if is somehow is leaking past the threads, at worst, you could wrap PTFE (polytetrafluorethylene, ie teflon tape) around those threads and crank the cap down. IF that is where it is leaking from.[/QUOTE]

The other day I left early for work, around 430 in the morning, and after 20 minutes and with the engine in normal range, (1/4 gauge ) put the heat on, and it was not heat at all. You guys may be right, cut it be the water pump ? what is the test procedure ?
also when the tank is full the sensor light still on, that why I changed the tank at the beginning, but the new thank did not fix it

Zeebins 09-22-2018 04:45 PM

Re: Surge tank is problematic
 
If your not getting much heat and the gauge is stuck at 1/4 it's probably the thermostat. That's what it was for me anyway. The ects and thermostat do share a lot of symptoms so it would probably be worth to replace both anyway.

fdryer 09-22-2018 10:43 PM

Re: Surge tank is problematic
 
SIRPAULGERMAN, not mentioning which car is overheating delays giving correct replies.

Is this problem with your '01? If it is, remove and examine the coolant sensor. It may be the original faulty one - round nosed plastic tip. The 1/4 needle deflection and no heat tends to point towards coolant sensor and thermostat. The correct replacement coolant sensor is the flat nosed brass one. If the coolant sensor was replaced, replace the thermostat.

The original coolant sensor fails and let's the engine overheat with incorrect temperature displaying a colder engine when its overheating like yours is doing. In addition to overheating, the thermostat rubber melts and lets coolant flow - little to no heat.

Get on this problem before winter otherwise you're not going to have any heat when its cold outside.

SIRPAULGERMAN 09-23-2018 01:23 AM

Re: Surge tank is problematic
 
Where is the coolant sensor ? what parts do I need ?

is the 2001 Saturn, on the other hand when the car is hot and starts to leak from the reservoir if I adjust the cap, it wont leak anymore, when the car does not have full water in the system, the gauge pass the half mark sometimes

fdryer 09-23-2018 03:17 AM

Re: Surge tank is problematic
 
2 Attachment(s)
Coolant sensor location; [url]https://www.youtube.com/watch?v=cucm7QGlsYs[/url]


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